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WO2012026540A1 - Terminal fitting - Google Patents

Terminal fitting Download PDF

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Publication number
WO2012026540A1
WO2012026540A1 PCT/JP2011/069209 JP2011069209W WO2012026540A1 WO 2012026540 A1 WO2012026540 A1 WO 2012026540A1 JP 2011069209 W JP2011069209 W JP 2011069209W WO 2012026540 A1 WO2012026540 A1 WO 2012026540A1
Authority
WO
WIPO (PCT)
Prior art keywords
terminal fitting
lance
terminal
end surface
locking
Prior art date
Application number
PCT/JP2011/069209
Other languages
French (fr)
Japanese (ja)
Inventor
大介 新川
鈴木　正剛
Original Assignee
矢崎総業株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 矢崎総業株式会社 filed Critical 矢崎総業株式会社
Priority to CN201180040216.5A priority Critical patent/CN103081241B/en
Priority to KR1020137004681A priority patent/KR20130044333A/en
Priority to DE112011102798T priority patent/DE112011102798T5/en
Priority to BR112013004446A priority patent/BR112013004446A2/en
Priority to KR1020167002477A priority patent/KR101613410B1/en
Publication of WO2012026540A1 publication Critical patent/WO2012026540A1/en
Priority to US13/773,697 priority patent/US9124017B2/en

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/40—Securing contact members in or to a base or case; Insulating of contact members
    • H01R13/42—Securing in a demountable manner
    • H01R13/422—Securing in resilient one-piece base or case, e.g. by friction; One-piece base or case formed with resilient locking means
    • H01R13/4223—Securing in resilient one-piece base or case, e.g. by friction; One-piece base or case formed with resilient locking means comprising integral flexible contact retaining fingers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/02—Contact members
    • H01R13/10—Sockets for co-operation with pins or blades
    • H01R13/11—Resilient sockets
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/02—Contact members
    • H01R13/04—Pins or blades for co-operation with sockets
    • H01R13/05—Resilient pins or blades
    • H01R13/055—Resilient pins or blades co-operating with sockets having a rectangular transverse section
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/02—Contact members
    • H01R13/15—Pins, blades or sockets having separate spring member for producing or increasing contact pressure
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/40—Securing contact members in or to a base or case; Insulating of contact members
    • H01R13/42—Securing in a demountable manner
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/02—Contact members
    • H01R13/10—Sockets for co-operation with pins or blades
    • H01R13/11—Resilient sockets
    • H01R13/113—Resilient sockets co-operating with pins or blades having a rectangular transverse section
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/62—Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement
    • H01R13/627—Snap or like fastening
    • H01R13/6271—Latching means integral with the housing
    • H01R13/6272—Latching means integral with the housing comprising a single latching arm

Definitions

  • the present invention relates to a terminal fitting that is locked to a lance provided in a connector housing so as to be elastically deformable and is attached to a terminal accommodating chamber.
  • some terminal fittings are provided with a stabilizer for stabilizing the posture of the terminal fitting at the rear end of the outer surface of the connecting portion, and the wide lance as described above is provided over the entire length direction. If they are formed with substantially the same width, the lance and the stabilizer may overlap each other and interfere with each other.
  • a connector disclosed in Patent Document 1 for example, in which such problems are eliminated.
  • a stabilizer 509 for guiding the insertion operation of the terminal fitting 507 through the insertion groove 505 provided on the inner wall of the cavity 503 protrudes from the outer surface of the connection portion 501 in this connector.
  • a to-be-locked surface 513 (not shown) provided on the connecting portion 501 and a hole edge front portion 515 (not shown) are provided over almost the entire width.
  • a locking portion 517 that can be locked is provided, and a relief recess that allows the stabilizer 509 to enter by communicating with the insertion groove 505 at a portion behind the locking portion 517 and overlapping the locking portion 517 in the width direction. 519 is provided.
  • the lance 511 has a substantially entire width with respect to the locked portion (the locked surface 513 and the hole edge front portion 515 of the locking hole not shown) provided in the connection portion 501. Since the locking portion 517 is locked, the terminal holding force is increased and the structure is strong against shearing. On the other hand, the lance 511 is provided with a relief recess 519 that communicates with the insertion groove 505 and allows the stabilizer 509 to enter at a portion that is behind the locking portion 517 and overlaps the locking portion 517 in the width direction. Therefore, interference with the stabilizer 509 can be avoided. Further, since it is not necessary to increase the connecting portion 501 in the width direction in order to avoid interference, an increase in size of the connector can be avoided.
  • a lance has a problem of a decrease in terminal holding force as the connector size is reduced.
  • a reduction in the lance size means a decrease in the holding force as it is, so that both miniaturization and maintenance of the holding force are problems.
  • the locking portion 517 of the lance 511 is locked over almost the entire width with respect to the locked portion provided in the connection portion 501 in response to a decrease in the lance holding force due to downsizing.
  • the structure is strong against shearing, and the terminal holding force is increased.
  • the edge of the locking hole is locked. If the edge at the end face is sharp, the edge bites into the lance, and there is a problem that the starting strength of shear fracture of the lance is greatly reduced.
  • the present invention has been made in view of the above circumstances, and an object of the present invention is to provide a terminal fitting that can suppress an increase in shear fracture of a lance due to downsizing and can improve holding force.
  • the elastically restored lance locks the locking hole of the terminal fitting.
  • the terminal locking surface contacts the hole edge locking end surface of the locking hole.
  • the hole edge locking end surface presses the terminal locking surface of the lance.
  • the biting resistance increasing portion is formed on the hole edge locking end surface, the resistance force when the hole edge locking end surface bites into the lance increases.
  • the biting resistance increasing portion increases the resistance in such a shape as to scratch the shearing surface, and the surface area of shearing can be increased. Thereby, the shear resistance of the lance can be increased and the holding force can be increased.
  • the biting resistance increasing portion becomes a corrugated portion formed by partially crushing the hole edge locking end surface, and the biting resistance or the shearing resistance is increased.
  • the resistance increasing portion can be easily formed.
  • biting resistance increasing portion is an R-attached portion formed by removing a corner portion on a locking side of the hole edge locking end surface.
  • the terminal fitting having the configuration of the above (3) by forming the R-attached portion on the hole edge locking end surface, the corner portion on the locking side of the unprocessed hole edge locking end surface is removed and at the same time the R-attached portion. Can be formed. Therefore, it is possible to remove the corners that promote biteability and suppress the ease of biting into the lance and the likelihood of shear fracture.
  • FIG. 1A is a cross-sectional view of a main part of a terminal fitting according to an embodiment of the present invention in which a corrugated portion is formed on the upper portion of the hole edge locking end surface
  • FIG. 1B is an upper portion of the hole edge locking end surface.
  • 2A is a front view of a terminal receiving port in the connector housing
  • FIG. 2B is a cross-sectional view taken along the line AA in FIG. 3A is a perspective view of the male terminal fitting
  • FIG. 3B is a perspective view of the female terminal fitting.
  • 4A is a front view of the male terminal fitting
  • FIG. 4B is a cross-sectional view taken along the line BB in FIG. 4A.
  • 5 (a) is a front view of the female terminal fitting
  • FIG. 5 (b) is a cross-sectional view taken along the line CC in FIG. 5 (b).
  • FIG. 6 is a cross-sectional view of a main part of a terminal fitting according to a comparative example.
  • FIG. 7A is a cross-sectional view of a main part of a terminal fitting according to another embodiment in which an R-attached portion is formed on the hole edge locking end surface
  • FIG. 7B is a cross-sectional view taken along DD in FIG. It is.
  • FIG. 8 is a perspective view showing the main parts of a conventional terminal fitting and terminal accommodating chamber.
  • the terminal fitting 15 includes a male terminal fitting 21 (see FIG. 3A) or a female terminal fitting 23 (FIG. 3B). Any of the above may be used. However, any terminal fitting 15 is required to have a locking hole 27 for locking the lance 25.
  • the connector 29 to which the terminal fitting 15 is attached has a male connector of a mating connector (not shown) on one end surface of the connector housing 17 formed in a rectangular parallelepiped.
  • a terminal receiving port 19 for receiving a terminal is opened.
  • the terminal receiving port 19 communicates with a terminal accommodating chamber 31 defined inside the connector housing 17.
  • the terminal receiving port 19 of the connector 29 is referred to as the front, and the opposite side is referred to as the rear.
  • the female terminal fitting 15 is inserted into the terminal accommodating chamber 31 from a terminal mounting opening 33 that opens at the rear part of the connector housing 17.
  • the female terminal fitting 15 is an example, and the terminal fitting 15 may be a male type.
  • a lance 25 projects into the space in which the terminal fitting 15 is mounted.
  • the lance 25 is formed integrally with the connector housing 17 by a synthetic resin material.
  • the lance 25 whose base end is connected to the bottom wall 35 has a free end 37 at the tip.
  • the base end of the lance 25 is cantilevered by the bottom wall 35 and can be elastically deformed.
  • a evacuation space 31 a is formed below the lance 25 between the lance 25 and the bottom wall 35.
  • the lance 25 has a convex portion 39 formed on the upper surface in the vicinity of the free end 37.
  • the convex part 39 the rear part becomes the inclined surface 41 and the front part becomes the locking part 43.
  • the inclined surface 41 hits the tip 45 of the electrical contact portion of the terminal fitting 15 and generates a component force that pushes the lance 25 down to the retreat space 31a.
  • the locking portion 43 locks the locking hole 27 of the terminal fitting 15 and restricts the terminal fitting 15 from being released rearward.
  • the male terminal fitting 21 shown in FIG. 3 (a) has a male tab 49 which is an electrical contact portion 47 at the tip, and a terminal main body portion 51, a conductor crimping portion 53, a jacket holding portion 55, and a rear portion thereof. Are successively connected.
  • the male terminal fitting 21 is made by sheet metal processing a metal plate.
  • the female terminal fitting 23 shown in FIG. 3 (b) has a box portion 57 which is an electric contact portion 47 for receiving a male tab of a mating terminal at the tip, and a contact spring portion 59 (in contact with the male tab) (inside thereof) 5 (a) and 5 (b)).
  • a terminal main body 51, a conductor crimping portion 53, and a jacket holding portion 55 are sequentially provided behind the box portion 57.
  • the terminal main body 51 of the male terminal fitting 21 and the female terminal fitting 23 is formed with a locking hole 27 that is locked to the lance 25.
  • the locking hole 27 is formed in a rectangular shape as shown in FIGS. 3 (a) and 3 (b).
  • the front side of the locking hole 27 is the hole edge locking end surface 11.
  • FIGS. 1A and 1B show the hole edge locking end surface 11 as a representative example of the female terminal fitting 23.
  • FIG. 1A and FIG. 1B are cross-sectional views of the front side of the female terminal fitting 23 when the substantially central portion of the locking hole 27 is cut. That is, the hole edge locking end surface 11 is viewed from the inside of the locking hole 27.
  • the hole edge locking end surface 11 is formed with a biting resistance increasing portion 61 that increases the biting resistance to the lance 25 instead of the flat shape of the comparative example shown in FIG.
  • the biting resistance increasing portion 61 is formed as a corrugated portion 13 formed by partially crushing the hole edge locking end surface 11.
  • the wave shape portion 13 may be formed only on the upper portion of the hole edge locking end surface 11 as shown in FIG. 1A, and as shown in FIG. It may be formed on both sides.
  • the direction in which the hole edge locking end surface 11 is crushed is the direction in which the hole edge locking end surface 11 is sandwiched from above and below (the vertical direction in FIGS. 1A and 1B), and the hole edge engagement from the inside of the locking hole 27.
  • the vertical direction toward the toe surface 11 (the left direction in FIGS. 4B and 5B) can be used.
  • the semicircular bulge formed at the lower portion of the hole edge locking end surface 11 is in contact with the male tab of the mating terminal in the contact spring portion 59. An indent that acts to increase pressure.
  • the biting resistance increasing portion 61 becomes the corrugated portion 13 formed by partially crushing the hole edge locking end surface 11, and the biting resistance that increases the biting resistance to the lance 25 and the shearing resistance.
  • the increase part 61 can be easily formed.
  • the operation of the terminal fitting 15 having the above configuration will be described.
  • the elastically restored lance 25 locks the locking hole 27 of the terminal fitting 15.
  • the locking portion 43 contacts the hole edge locking end surface 11 of the locking hole 27.
  • an external force in the pulling direction acts on the terminal fitting 15 that has been locked, the hole edge locking end surface 11 presses the locking portion 43 of the lance 25.
  • the lance 25 receives a reaction force from the hole edge locking end surface 11.
  • shearing starts at the corner 63 of the flat peripheral edge.
  • the biting resistance increasing portion 61 is formed on the hole edge locking end surface 11, the resistance force when the hole edge locking end surface 11 bites into the lance 25 is increased.
  • the biting resistance increasing portion 61 increases the resistance in such a shape as to scratch the shearing surface, and the surface area of shearing can be increased. Thereby, a shearing resistance can be increased and the holding force of the terminal metal fitting 15 can be increased.
  • the terminal fitting 15A according to another embodiment has a sharp end surface (that is, the corner 63) in order to increase the resistance when biting into the lance 25. By losing it, the resistance is increased.
  • the biting resistance increasing portion 61 according to this example is an R attaching portion 65 formed by removing the corner portion 63 on the locking side of the hole edge locking end surface 11.
  • this terminal fitting 15A by forming the R-attached portion 65 on the hole edge locking end surface 11, the corner 63 on the locking side of the unprocessed hole edge locking end surface 11 is removed and at the same time the R-attached portion 65 is formed. It is possible to remove the corner portion 63 that promotes bite property, and to suppress the ease of bite and the possibility of shear fracture.
  • terminal fittings 15 and 15A according to the present embodiment it is possible to suppress the increase in shear fracture of the lance 25 due to downsizing and improve the holding force.
  • the terminal fitting according to the present invention it is possible to suppress the increase in shear fracture of the lance due to downsizing and improve the holding force.

Landscapes

  • Connector Housings Or Holding Contact Members (AREA)
  • Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)

Abstract

Provided is a terminal fitting configured in such a manner that the possibility of shear breakage of a lance due to a size reduction is minimized and that the terminal fitting is held by an increased holding force. A terminal fitting (15) installed in a terminal containing chamber, which is formed in a connector housing, and engaged with an elastically deformable lance provided in the terminal containing chamber. A bite resistance increasing section (61) for increasing the bite resistance of the lance is formed at an engagement end surface (11) at the edge of an engagement hole (27) with which the lance is engaged.

Description

端子金具Terminal fitting
　本発明は、コネクタハウジングに弾性変形可能に設けられたランスに係止されて端子収容室に装着される端子金具に関する。 The present invention relates to a terminal fitting that is locked to a lance provided in a connector housing so as to be elastically deformable and is attached to a terminal accommodating chamber.
　端子金具の保持力を大きくするには、ランスの幅寸法を増大させることで、係合孔の孔縁前部に対するランスの掛り代を増大させればよい。しかし、端子金具のなかには、接続部の外面後端部に、端子金具の姿勢安定化のためのスタビライザが突設されているものがあり、上記のような幅広のランスが長さ方向の全域に亘ってほぼ同幅をもって形成されると、ランスとスタビライザとが互いに重なり合って双方干渉する事態が起こり得る。 In order to increase the holding force of the terminal fitting, it is only necessary to increase the lance engagement margin with respect to the hole edge front portion of the engagement hole by increasing the width dimension of the lance. However, some terminal fittings are provided with a stabilizer for stabilizing the posture of the terminal fitting at the rear end of the outer surface of the connecting portion, and the wide lance as described above is provided over the entire length direction. If they are formed with substantially the same width, the lance and the stabilizer may overlap each other and interfere with each other.
　このような不具合を解消したものに、例えば特許文献１に開示されたコネクタがある。図８に示すように、このコネクタにおける接続部５０１の外面には、キャビティ５０３の内壁に設けられた挿通溝５０５を通して端子金具５０７の挿入動作を案内するスタビライザ５０９が突設される。キャビティ５０３の内壁に設けられたランス５１１には、接続部５０１に設けられた不図示の突部の被係止面５１３及び不図示の係止孔の孔縁前部５１５をほぼ全幅に亘って係止可能な係止部５１７が設けられるとともに、係止部５１７より後方でかつこの係止部５１７と幅方向について重なる部分に、挿通溝５０５と連通してスタビライザ５０９の突入を許容する逃し凹部５１９が設けられている。 There is a connector disclosed in Patent Document 1, for example, in which such problems are eliminated. As shown in FIG. 8, a stabilizer 509 for guiding the insertion operation of the terminal fitting 507 through the insertion groove 505 provided on the inner wall of the cavity 503 protrudes from the outer surface of the connection portion 501 in this connector. On the lance 511 provided on the inner wall of the cavity 503, a to-be-locked surface 513 (not shown) provided on the connecting portion 501 and a hole edge front portion 515 (not shown) are provided over almost the entire width. A locking portion 517 that can be locked is provided, and a relief recess that allows the stabilizer 509 to enter by communicating with the insertion groove 505 at a portion behind the locking portion 517 and overlapping the locking portion 517 in the width direction. 519 is provided.
　このような構成によれば、接続部５０１に設けられた被係止部（被係止面５１３及び不図示の係止孔の孔縁前部５１５）に対してほぼ全幅に亘ってランス５１１の係止部５１７が係止するから、端子保持力が大きくなって剪断に対して強い構造となる。一方、ランス５１１には、係止部５１７より後方でかつこの係止部５１７と幅方向について重なる部分に、挿通溝５０５と連通してスタビライザ５０９の突入を許容する逃し凹部５１９が設けられているから、スタビライザ５０９との干渉を回避できる。また、干渉を回避するために、接続部５０１を幅方向に増大させる必要がないから、コネクタの大型化を回避できる。 According to such a configuration, the lance 511 has a substantially entire width with respect to the locked portion (the locked surface 513 and the hole edge front portion 515 of the locking hole not shown) provided in the connection portion 501. Since the locking portion 517 is locked, the terminal holding force is increased and the structure is strong against shearing. On the other hand, the lance 511 is provided with a relief recess 519 that communicates with the insertion groove 505 and allows the stabilizer 509 to enter at a portion that is behind the locking portion 517 and overlaps the locking portion 517 in the width direction. Therefore, interference with the stabilizer 509 can be avoided. Further, since it is not necessary to increase the connecting portion 501 in the width direction in order to avoid interference, an increase in size of the connector can be avoided.
日本国特開２００５－２５９３６３号公報Japanese Unexamined Patent Publication No. 2005-259363
　近年、コネクタにおいて、ランスは、コネクタ小型化を進める中、その端子保持力低下が問題となる。ランスサイズが小さくなることは、そのまま保持力の低下を意味するため、小型化と保持力維持の双方の両立が課題となっている。上記した従来の技術は、小型化によるランス保持力の低下に対し、接続部５０１に設けられた被係止部に対してほぼ全幅に亘ってランス５１１の係止部５１７が係止するようにして、剪断に対して強い構造とし、端子保持力が大きくなるように図っている。
　しかしながら、係止面積を大きく確保しても、端子金具とランスの係止部分では、金属からなる端子金具の係止穴を樹脂製のランスが係止するため、係止穴の穴縁係止端面におけるエッジが鋭いと、エッジがランスに食い込み、ランスの剪断破壊の開始強度が大幅に低下する問題があった。 In recent years, in a connector, a lance has a problem of a decrease in terminal holding force as the connector size is reduced. A reduction in the lance size means a decrease in the holding force as it is, so that both miniaturization and maintenance of the holding force are problems. In the conventional technique described above, the locking portion 517 of the lance 511 is locked over almost the entire width with respect to the locked portion provided in the connection portion 501 in response to a decrease in the lance holding force due to downsizing. Thus, the structure is strong against shearing, and the terminal holding force is increased.
However, even if a large locking area is secured, since the resin lance locks the locking hole of the metal terminal fitting at the locking portion between the terminal fitting and the lance, the edge of the locking hole is locked. If the edge at the end face is sharp, the edge bites into the lance, and there is a problem that the starting strength of shear fracture of the lance is greatly reduced.
　本発明は上記状況に鑑みてなされたもので、その目的は、小型化によるランスの剪断破壊の増大を抑えて、保持力の向上を図ることのできる端子金具を提供することにある。 The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a terminal fitting that can suppress an increase in shear fracture of a lance due to downsizing and can improve holding force.
　本発明に係る上記目的は、下記構成により達成される。
（１）　コネクタハウジングに形成される端子収容室に設けられた弾性変形可能なランスに係止されて前記端子収容室に装着される端子金具であって、前記ランスが係止する係止穴の穴縁係止端面に、前記ランスへの食い込み抵抗を増大させる食い込み抵抗増大部が形成されている端子金具。 The above object of the present invention is achieved by the following configuration.
(1) A terminal fitting that is locked to an elastically deformable lance provided in a terminal housing chamber formed in a connector housing and is mounted on the terminal housing chamber, A terminal fitting in which a biting resistance increasing portion for increasing the biting resistance to the lance is formed on a hole edge locking end surface.
　上記（１）の構成の端子金具によれば、端子金具が端子収容室の所定位置に挿入されると、弾性復帰したランスが、端子金具の係止穴を係止する。係止穴を係止したランスは、端子係止面が係止穴の穴縁係止端面に当接する。係止された端子金具に引き抜き方向の外力が作用すると、穴縁係止端面がランスの端子係止面を押圧する。この際、穴縁係止端面には食い込み抵抗増大部が形成されていることから、穴縁係止端面がランスに食い込む際の抵抗力が大きくなる。また、食い込んだ後も、食い込み抵抗増大部が剪断表面を引っかくような形状で抵抗力を増加させ、剪断の表面積も底上げできる。これにより、ランスの剪断抵抗を増大し、保持力を増加することができる。 According to the terminal fitting configured as described in (1) above, when the terminal fitting is inserted into a predetermined position of the terminal accommodating chamber, the elastically restored lance locks the locking hole of the terminal fitting. As for the lance which locked the locking hole, the terminal locking surface contacts the hole edge locking end surface of the locking hole. When an external force in the pulling direction acts on the locked terminal fitting, the hole edge locking end surface presses the terminal locking surface of the lance. At this time, since the biting resistance increasing portion is formed on the hole edge locking end surface, the resistance force when the hole edge locking end surface bites into the lance increases. In addition, even after biting, the biting resistance increasing portion increases the resistance in such a shape as to scratch the shearing surface, and the surface area of shearing can be increased. Thereby, the shear resistance of the lance can be increased and the holding force can be increased.
（２）　上記（１）の構成の端子金具であって、前記食い込み抵抗増大部は、前記穴縁係止端面を部分的に潰して形成した波形状部である端子金具。 (2) The terminal fitting having the configuration of (1) above, wherein the biting resistance increasing portion is a wave-shaped portion formed by partially crushing the hole edge locking end face.
　上記（２）の構成の端子金具によれば、食い込み抵抗増大部が、穴縁係止端面を部分的に潰したことにより形成される波形状部となり、食い込み抵抗や、剪断抵抗を増大させる食い込み抵抗増大部が容易に形成可能となる。 According to the terminal metal fitting of the above configuration (2), the biting resistance increasing portion becomes a corrugated portion formed by partially crushing the hole edge locking end surface, and the biting resistance or the shearing resistance is increased. The resistance increasing portion can be easily formed.
（３）　上記（１）の構成の端子金具であって、前記食い込み抵抗増大部は、前記穴縁係止端面の係止側の角部を除去して形成したＲ付け部である端子金具。 (3) The terminal fitting having the configuration of (1) above, wherein the biting resistance increasing portion is an R-attached portion formed by removing a corner portion on a locking side of the hole edge locking end surface.
　上記（３）の構成の端子金具によれば、穴縁係止端面にＲ付け部を形成することで、無加工の穴縁係止端面における係止側の角部を除去すると同時にＲ付け部を形成できる。そこで、食い込み性を促進する角部を除去して、ランスへの食い込み易さや、剪断破壊の生じ易さを抑止することができる。 According to the terminal fitting having the configuration of the above (3), by forming the R-attached portion on the hole edge locking end surface, the corner portion on the locking side of the unprocessed hole edge locking end surface is removed and at the same time the R-attached portion. Can be formed. Therefore, it is possible to remove the corners that promote biteability and suppress the ease of biting into the lance and the likelihood of shear fracture.
図１（ａ）は穴縁係止端面の上部に波形状部が形成された本発明の一実施形態に係る端子金具の要部断面図、図１（ｂ）は穴縁係止端面の上部及び下部に波形状部が形成された変形例に係る端子金具の要部断面図である。FIG. 1A is a cross-sectional view of a main part of a terminal fitting according to an embodiment of the present invention in which a corrugated portion is formed on the upper portion of the hole edge locking end surface, and FIG. 1B is an upper portion of the hole edge locking end surface. It is principal part sectional drawing of the terminal metal fitting which concerns on the modification by which the waveform part was formed in the lower part. 図２（ａ）はコネクタハウジングにおける端子受入口の正面図、図２（ｂ）は図２（ａ）におけるＡ－Ａ断面図である。2A is a front view of a terminal receiving port in the connector housing, and FIG. 2B is a cross-sectional view taken along the line AA in FIG. 図３（ａ）は雄端子金具の斜視図、図３（ｂ）は雌端子金具の斜視図である。3A is a perspective view of the male terminal fitting, and FIG. 3B is a perspective view of the female terminal fitting. 図４（ａ）は雄端子金具の正面図、図４（ｂ）は図４（ａ）におけるＢ－Ｂ断面図である。4A is a front view of the male terminal fitting, and FIG. 4B is a cross-sectional view taken along the line BB in FIG. 4A. 図５（ａ）は雌端子金具の正面図、図５（ｂ）は図５（ｂ）におけるＣ－Ｃ断面図である。5 (a) is a front view of the female terminal fitting, and FIG. 5 (b) is a cross-sectional view taken along the line CC in FIG. 5 (b). 図６は比較例に係る端子金具の要部断面図である。FIG. 6 is a cross-sectional view of a main part of a terminal fitting according to a comparative example. 図７（ａ）は穴縁係止端面にＲ付け部が形成された他の実施形態に係る端子金具の要部断面図、図７（ｂ）は図７（ａ）におけるＤ－Ｄ断面図である。FIG. 7A is a cross-sectional view of a main part of a terminal fitting according to another embodiment in which an R-attached portion is formed on the hole edge locking end surface, and FIG. 7B is a cross-sectional view taken along DD in FIG. It is. 図８は従来の端子金具及び端子収容室の要部を表した斜視図である。FIG. 8 is a perspective view showing the main parts of a conventional terminal fitting and terminal accommodating chamber.
　以下、本発明の一実施形態に係る端子金具を図面を参照して説明する。
　図１（ａ）～図２（ｂ）に示すように、本実施形態に係る端子金具１５は、雄端子金具２１（図３（ａ）参照）、又は雌端子金具２３（図３（ｂ）参照）のいずれであってもよい。但し、いずれの端子金具１５であってもランス２５が係止する係止穴２７を有することが構成要件となる。 Hereinafter, a terminal fitting according to an embodiment of the present invention will be described with reference to the drawings.
As shown in FIGS. 1A to 2B, the terminal fitting 15 according to the present embodiment includes a male terminal fitting 21 (see FIG. 3A) or a female terminal fitting 23 (FIG. 3B). Any of the above may be used. However, any terminal fitting 15 is required to have a locking hole 27 for locking the lance 25.
　図２（ａ）及び図２（ｂ）に示すように、端子金具１５が装着されるコネクタ２９は、直方体に形成されるコネクタハウジング１７の長手方向の一端面に、図示しない相手側コネクタの雄端子を受け入れる端子受入口１９を開口させている。端子受入口１９は、コネクタハウジング１７の内部に画成されている端子収容室３１に連通する。本明細書では説明の都合上、コネクタ２９の端子受入口１９を前、その反対側を後と称する。 As shown in FIGS. 2A and 2B, the connector 29 to which the terminal fitting 15 is attached has a male connector of a mating connector (not shown) on one end surface of the connector housing 17 formed in a rectangular parallelepiped. A terminal receiving port 19 for receiving a terminal is opened. The terminal receiving port 19 communicates with a terminal accommodating chamber 31 defined inside the connector housing 17. In this specification, for convenience of explanation, the terminal receiving port 19 of the connector 29 is referred to as the front, and the opposite side is referred to as the rear.
　端子収容室３１には、コネクタハウジング１７の後部に開口する端子装着口３３から雌型の端子金具１５が挿入される。なお、雌型の端子金具１５は一例であり、端子金具１５は雄型であってもよい。この端子金具１５が装着される空間にはランス２５が突出している。ランス２５は、合成樹脂材料によりコネクタハウジング１７と一体に成形されている。基端が底壁３５に接続されたランス２５は、先端が自由端３７となる。ランス２５は、底壁３５に基端が片持ち状に支持されて弾性変形可能となる。ランス２５の下方には、底壁３５との間に退避空間３１ａが形成されている。 The female terminal fitting 15 is inserted into the terminal accommodating chamber 31 from a terminal mounting opening 33 that opens at the rear part of the connector housing 17. The female terminal fitting 15 is an example, and the terminal fitting 15 may be a male type. A lance 25 projects into the space in which the terminal fitting 15 is mounted. The lance 25 is formed integrally with the connector housing 17 by a synthetic resin material. The lance 25 whose base end is connected to the bottom wall 35 has a free end 37 at the tip. The base end of the lance 25 is cantilevered by the bottom wall 35 and can be elastically deformed. A evacuation space 31 a is formed below the lance 25 between the lance 25 and the bottom wall 35.
　ランス２５は、自由端３７の近傍の上面に、凸部３９が形成されている。凸部３９は、後部が傾斜面４１となり、前部が係止部４３となる。傾斜面４１は、端子金具１５が挿入される際、端子金具１５の電気接触部先端４５が当たり、ランス２５を退避空間３１ａへ押し下げる分力を生じさせる。係止部４３は、ランス２５が弾性復帰して元の位置に戻ったとき、端子金具１５の係止穴２７を係止して、端子金具１５の後方への離脱を規制する。 The lance 25 has a convex portion 39 formed on the upper surface in the vicinity of the free end 37. As for the convex part 39, the rear part becomes the inclined surface 41 and the front part becomes the locking part 43. When the terminal fitting 15 is inserted, the inclined surface 41 hits the tip 45 of the electrical contact portion of the terminal fitting 15 and generates a component force that pushes the lance 25 down to the retreat space 31a. When the lance 25 returns elastically and returns to its original position, the locking portion 43 locks the locking hole 27 of the terminal fitting 15 and restricts the terminal fitting 15 from being released rearward.
　図３（ａ）に示す雄端子金具２１は、先端に電気接触部４７である雄タブ４９を有し、その後方に端子本体部５１と、導体圧着部５３と、外被保持部５５と、が順次連設されてなる。雄端子金具２１は、金属板を板金加工することによって作られる。 The male terminal fitting 21 shown in FIG. 3 (a) has a male tab 49 which is an electrical contact portion 47 at the tip, and a terminal main body portion 51, a conductor crimping portion 53, a jacket holding portion 55, and a rear portion thereof. Are successively connected. The male terminal fitting 21 is made by sheet metal processing a metal plate.
　図３（ｂ）に示す雌端子金具２３は、先端に相手側端子の雄タブを受け入れる電気接触部４７である箱部５７を有し、その内部には雄タブと接触する接触バネ部５９（図５（ａ）及び（ｂ）参照）を備える。箱部５７の後方には、雄端子金具２１と同様に端子本体部５１と、導体圧着部５３と、外被保持部５５と、が順次連設されてなる。 The female terminal fitting 23 shown in FIG. 3 (b) has a box portion 57 which is an electric contact portion 47 for receiving a male tab of a mating terminal at the tip, and a contact spring portion 59 (in contact with the male tab) (inside thereof) 5 (a) and 5 (b)). As with the male terminal fitting 21, a terminal main body 51, a conductor crimping portion 53, and a jacket holding portion 55 are sequentially provided behind the box portion 57.
　雄端子金具２１及び雌端子金具２３の端子本体部５１には、ランス２５に係止される係止穴２７が形成されている。係止穴２７は、図３（ａ）及び図３（ｂ）に示すように、矩形状に形成される。この係止穴２７は、前方側が穴縁係止端面１１となる。図１（ａ）及び図１（ｂ）はこの穴縁係止端面１１を、雌端子金具２３を代表例として示している。図１（ａ）及び図１（ｂ）は係止穴２７の略中央部を切断して雌端子金具２３の前方側を見た断面図となっている。すなわち、係止穴２７の内側から穴縁係止端面１１を正面視している。この穴縁係止端面１１には、図６に示した比較例のフラットな形状ではなく、ランス２５への食い込み抵抗を増大させる食い込み抵抗増大部６１が形成されている。 The terminal main body 51 of the male terminal fitting 21 and the female terminal fitting 23 is formed with a locking hole 27 that is locked to the lance 25. The locking hole 27 is formed in a rectangular shape as shown in FIGS. 3 (a) and 3 (b). The front side of the locking hole 27 is the hole edge locking end surface 11. FIGS. 1A and 1B show the hole edge locking end surface 11 as a representative example of the female terminal fitting 23. FIG. 1A and FIG. 1B are cross-sectional views of the front side of the female terminal fitting 23 when the substantially central portion of the locking hole 27 is cut. That is, the hole edge locking end surface 11 is viewed from the inside of the locking hole 27. The hole edge locking end surface 11 is formed with a biting resistance increasing portion 61 that increases the biting resistance to the lance 25 instead of the flat shape of the comparative example shown in FIG.
　本実施形態において、この食い込み抵抗増大部６１は、穴縁係止端面１１を部分的に潰して形成した波形状部１３として形成されている。波形状部１３は、図１（ａ）に示すように、穴縁係止端面１１の上部のみに形成されてもよく、図１（ｂ）に示すように、穴縁係止端面１１の上下部の双方に形成されてもよい。穴縁係止端面１１を潰す方向は、上下から穴縁係止端面１１を挟む方向（図１（ａ）、図１（ｂ）の上下方向）や、係止穴２７の内側から穴縁係止端面１１に向かう垂直な方向（図４（ｂ）、図５（ｂ）の左方向）とすることができる。
　なお、図１（ａ）及び図１（ｂ）において、穴縁係止端面１１の下部に形成された半円状の膨出部は、接触バネ部５９における相手側端子の雄タブとの接触圧を上げるように作用するインデントである。 In the present embodiment, the biting resistance increasing portion 61 is formed as a corrugated portion 13 formed by partially crushing the hole edge locking end surface 11. The wave shape portion 13 may be formed only on the upper portion of the hole edge locking end surface 11 as shown in FIG. 1A, and as shown in FIG. It may be formed on both sides. The direction in which the hole edge locking end surface 11 is crushed is the direction in which the hole edge locking end surface 11 is sandwiched from above and below (the vertical direction in FIGS. 1A and 1B), and the hole edge engagement from the inside of the locking hole 27. The vertical direction toward the toe surface 11 (the left direction in FIGS. 4B and 5B) can be used.
In FIGS. 1A and 1B, the semicircular bulge formed at the lower portion of the hole edge locking end surface 11 is in contact with the male tab of the mating terminal in the contact spring portion 59. An indent that acts to increase pressure.
　本実施形態では、食い込み抵抗増大部６１が、穴縁係止端面１１を部分的に潰したことにより形成される波形状部１３となり、ランス２５への食い込み抵抗や、剪断抵抗を増大させる食い込み抵抗増大部６１が容易に形成可能となる。 In the present embodiment, the biting resistance increasing portion 61 becomes the corrugated portion 13 formed by partially crushing the hole edge locking end surface 11, and the biting resistance that increases the biting resistance to the lance 25 and the shearing resistance. The increase part 61 can be easily formed.
　次に、上記の構成を有する端子金具１５の作用を説明する。
　端子金具１５は、端子収容室３１の所定位置に挿入されると、弾性復帰したランス２５が、端子金具１５の係止穴２７を係止する。係止穴２７を係止したランス２５は、係止部４３が係止穴２７の穴縁係止端面１１に当接する。係止された端子金具１５に引き抜き方向の外力が作用すると、穴縁係止端面１１がランス２５の係止部４３を押圧する。 Next, the operation of the terminal fitting 15 having the above configuration will be described.
When the terminal fitting 15 is inserted into a predetermined position of the terminal accommodating chamber 31, the elastically restored lance 25 locks the locking hole 27 of the terminal fitting 15. In the lance 25 that locks the locking hole 27, the locking portion 43 contacts the hole edge locking end surface 11 of the locking hole 27. When an external force in the pulling direction acts on the terminal fitting 15 that has been locked, the hole edge locking end surface 11 presses the locking portion 43 of the lance 25.
　つまり、ランス２５は穴縁係止端面１１からの反力を受ける。このとき図６に示した比較例の端子金具のようにフラットな穴縁係止端面１１では、フラットな周縁の角部６３で剪断が開始する。 That is, the lance 25 receives a reaction force from the hole edge locking end surface 11. At this time, in the flat hole edge locking end surface 11 as in the terminal fitting of the comparative example shown in FIG. 6, shearing starts at the corner 63 of the flat peripheral edge.
　本実施形態に係る端子金具１５では、穴縁係止端面１１に食い込み抵抗増大部６１が形成されていることから、穴縁係止端面１１がランス２５に食い込む際の抵抗力が大きくなる。また、食い込んだ後も、食い込み抵抗増大部６１が剪断表面を引っかくような形状で抵抗力を増加させ、剪断の表面積も底上げできる。これにより、剪断抵抗を増大させ、端子金具１５の保持力を増加させることができる。 In the terminal fitting 15 according to the present embodiment, since the biting resistance increasing portion 61 is formed on the hole edge locking end surface 11, the resistance force when the hole edge locking end surface 11 bites into the lance 25 is increased. In addition, even after biting in, the biting resistance increasing portion 61 increases the resistance in such a shape as to scratch the shearing surface, and the surface area of shearing can be increased. Thereby, a shearing resistance can be increased and the holding force of the terminal metal fitting 15 can be increased.
　次に、本発明に係る端子金具１５の他の実施形態を説明する。
　図７（ａ）及び図７（ｂ）に示すように、他の実施形態に係る端子金具１５Ａは、ランス２５に食い込む際の抵抗力を上げるため、尖った端面（すなわち、角部６３）をなくすことで、抵抗力をあげている。すなわち、この例による食い込み抵抗増大部６１は、穴縁係止端面１１の係止側の角部６３を除去して形成したＲ付け部６５としている。 Next, another embodiment of the terminal fitting 15 according to the present invention will be described.
As shown in FIG. 7A and FIG. 7B, the terminal fitting 15A according to another embodiment has a sharp end surface (that is, the corner 63) in order to increase the resistance when biting into the lance 25. By losing it, the resistance is increased. That is, the biting resistance increasing portion 61 according to this example is an R attaching portion 65 formed by removing the corner portion 63 on the locking side of the hole edge locking end surface 11.
　この端子金具１５Ａでは、穴縁係止端面１１にＲ付け部６５を形成することで、無加工の穴縁係止端面１１における係止側の角部６３を除去すると同時にＲ付け部６５を形成でき、食い込み性を促進する角部６３を除去して、食い込み易さや、剪断破壊の生じ易さを抑止することができる。 In this terminal fitting 15A, by forming the R-attached portion 65 on the hole edge locking end surface 11, the corner 63 on the locking side of the unprocessed hole edge locking end surface 11 is removed and at the same time the R-attached portion 65 is formed. It is possible to remove the corner portion 63 that promotes bite property, and to suppress the ease of bite and the possibility of shear fracture.
　したがって、本実施形態に係る端子金具１５，１５Ａによれば、小型化によるランス２５の剪断破壊の増大を抑えて、保持力の向上を図ることができる。 Therefore, according to the terminal fittings 15 and 15A according to the present embodiment, it is possible to suppress the increase in shear fracture of the lance 25 due to downsizing and improve the holding force.
　なお、前述した実施形態は本発明の代表的な形態を示したに過ぎず、本発明は、実施形態に限定されるものではない。即ち、本発明の骨子を逸脱しない範囲で種々変形して実施することができる。
　なお、本出願は、２０１０年８月２５日出願の日本特許出願（特願２０１０－１８８５６０）に基づくものであり、その内容はここに参照として取り込まれる。 In addition, embodiment mentioned above only showed the typical form of this invention, and this invention is not limited to embodiment. That is, various modifications can be made without departing from the scope of the present invention.
This application is based on a Japanese patent application (Japanese Patent Application No. 2010-188560) filed on August 25, 2010, the contents of which are incorporated herein by reference.
　以上のように、本発明による端子金具によれば、小型化によるランスの剪断破壊の増大を抑えて、保持力の向上を図ることができる。 As described above, according to the terminal fitting according to the present invention, it is possible to suppress the increase in shear fracture of the lance due to downsizing and improve the holding force.
１１　穴縁係止端面
１３　波形状部
１５　端子金具
１７　コネクタハウジング
２５　ランス
２７　係止穴
３１　端子収容室
６１　食い込み抵抗増大部
６３　角部
６５　Ｒ付け部 DESCRIPTION OF SYMBOLS 11 Hole edge locking end surface 13 Wave-shaped part 15 Terminal metal fitting 17 Connector housing 25 Lance 27 Locking hole 31 Terminal accommodation chamber 61 Biting resistance increase part 63 Corner | angular part 65 R attaching part

Claims (3)

  1. 　コネクタハウジングに形成される端子収容室に設けられた弾性変形可能なランスに係止されて前記端子収容室に装着される端子金具であって、
    　前記ランスが係止する係止穴の穴縁係止端面に、前記ランスへの食い込み抵抗を増大させる食い込み抵抗増大部が形成されている端子金具。     A terminal fitting that is locked to an elastically deformable lance provided in a terminal housing chamber formed in a connector housing and is attached to the terminal housing chamber,
    A terminal fitting in which a biting resistance increasing portion for increasing a biting resistance to the lance is formed on a hole edge locking end surface of a locking hole for locking the lance.
  2. 　請求項１記載の端子金具であって、
    　前記食い込み抵抗増大部は、前記穴縁係止端面を部分的に潰して形成した波形状部である端子金具。     The terminal fitting according to claim 1,
    The biting resistance increasing portion is a terminal fitting that is a wave-shaped portion formed by partially crushing the hole edge locking end surface.
  3. 　請求項１記載の端子金具であって、
    　前記食い込み抵抗増大部は、前記穴縁係止端面の係止側の角部を除去して形成したＲ付け部である端子金具。     The terminal fitting according to claim 1,
    The biting resistance increasing portion is a terminal fitting which is an R-attached portion formed by removing a corner portion on the locking side of the hole edge locking end surface.
PCT/JP2011/069209 2010-08-25 2011-08-25 Terminal fitting WO2012026540A1 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
CN201180040216.5A CN103081241B (en) 2010-08-25 2011-08-25 Terminal gold utensil
KR1020137004681A KR20130044333A (en) 2010-08-25 2011-08-25 Terminal fitting
DE112011102798T DE112011102798T5 (en) 2010-08-25 2011-08-25 Terminal fitting
BR112013004446A BR112013004446A2 (en) 2010-08-25 2011-08-25 terminal fitting
KR1020167002477A KR101613410B1 (en) 2010-08-25 2011-08-25 Terminal fitting
US13/773,697 US9124017B2 (en) 2010-08-25 2013-02-22 Terminal fitting

Applications Claiming Priority (2)

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JP2010188560A JP5769391B2 (en) 2010-08-25 2010-08-25 Terminal fitting
JP2010-188560 2010-08-25

Related Child Applications (1)

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US13/773,697 Continuation US9124017B2 (en) 2010-08-25 2013-02-22 Terminal fitting

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WO2012026540A1 true WO2012026540A1 (en) 2012-03-01

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JP (1) JP5769391B2 (en)
KR (2) KR101613410B1 (en)
CN (1) CN103081241B (en)
BR (1) BR112013004446A2 (en)
DE (1) DE112011102798T5 (en)
WO (1) WO2012026540A1 (en)

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JP5629530B2 (en) * 2010-08-23 2014-11-19 矢崎総業株式会社 connector
JP2015232927A (en) * 2014-06-09 2015-12-24 矢崎総業株式会社 connector
JP6154430B2 (en) 2015-06-02 2017-06-28 矢崎総業株式会社 Female terminal fitting and connector having the same

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JP5769391B2 (en) 2015-08-26
KR20130044333A (en) 2013-05-02
DE112011102798T5 (en) 2013-05-29
BR112013004446A2 (en) 2016-06-07
KR20160018831A (en) 2016-02-17
CN103081241B (en) 2015-11-25
US20130165000A1 (en) 2013-06-27
US9124017B2 (en) 2015-09-01
JP2012048903A (en) 2012-03-08
KR101613410B1 (en) 2016-04-18
CN103081241A (en) 2013-05-01

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